package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelOperation implements Ioperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("删除一本书");
        System.out.println("请选择要删除的图书");
        Scanner scanner=new Scanner(System.in);
        String name=scanner.nextLine();
        int index=-1;
        int currentSize= bookList.getUsedSize();
        int i=0;
        for (; i <currentSize ; i++) {
            Book book=bookList.getBook(i);
            if (book.getName().equals(name)){
               index=i;
                break;
            }
        }
        if (i>=currentSize){
            System.out.println("没找到这本书");
            return;
        }

        for (int j = index; j < currentSize-1; j++) {
            Book book=bookList.getBook(j+1);
            bookList.setBook(j,book);
        }
        bookList.setUsedSize(currentSize-1);
        System.out.println("删除书籍成功");
    }
}
